Buy an Air Curtain, they rock! Long line of small bubbles
A flexable one is best.
I have mine arranged in a semi circle behind a small cave I made from 3 rocks. Looks great
Just a hint, buy some little suction cup holders for the tubing as it floats when full of air, and is very difficult to make it stay in place without these!
Also get a gang valve, they take the pumps output and split it into several outputs, which is very useful! I drive an air curtain, 2 air stones (one is insode an ornament so the ornament bubbles) and a air powered bridge thingy off a small air pump with a gang valve
My tubes are all suckered to the inside AND outside of the tank so they look neat(ish) and then buried under gravel. I plan to sucker them to the bottom of the tank too once I have thoroughly settled on the layout.
A decent air system can make a great impact to the tank, and the more turbulence on the surface of the water the better!